WO2018223467A1

WO2018223467A1 - Control platform for disc-shaped electric loudspeaker

Info

Publication number: WO2018223467A1
Application number: PCT/CN2017/091160
Authority: WO
Inventors: 张善琴
Original assignee: 余姚德诚科技咨询有限公司
Priority date: 2017-06-06
Filing date: 2017-06-30
Publication date: 2018-12-13
Also published as: CN107277705A

Abstract

A control platform for a disc-shaped electric loudspeaker (1) comprises a disc-shaped electric loudspeaker (1) consisting of a lower iron core, a coil, an upper iron core, a diaphragm, a resonance plate, an armature, an outer iron core, a contact, an adjustment screw bolt, a loudspeaker button, and a tightening screw nut. The upper iron core is provided above the outer iron core. The lower iron core is provided under the outer iron core. The lower iron core and the upper iron core are arranged opposite to each other. The coil winds around the outer iron core. The diaphragm is provided above the upper iron core. The resonance plate is provided above the diaphragm. The armature is provided between the upper iron core and the diaphragm. The contact is in contact with the armature. The outer iron core is connected to a positive end of a power supply. The loudspeaker button is positioned between the contact and a negative end of the power supply, and is used to turn on the disc-shaped electric loudspeaker (1) when being pressed. The control platform for a disc-shaped electric loudspeaker (1) has a higher level of intelligence of sound emission control of a disc-shaped electric loudspeaker (1).

Description

Basin electric horn control platform

Technical field

The invention relates to the field of electric horns, and in particular to a basin-shaped electric horn control platform.

Background technique

A horn, also known as a horn, is a transducing device that converts an electrical signal into an acoustic signal. The performance of the horn has a great influence on the sound quality. The horn is one of the weakest devices in audio equipment, and it is one of the most important parts for sound effects. There are many types of speakers, and the prices vary greatly. Audio power passes through electromagnetic, piezoelectric or electrostatic effects, causing the cone or diaphragm to vibrate and resonate (resonate) with the surrounding air to produce sound.

Low-grade plastic speakers are thin and can't overcome resonance, and there is no sound quality (some partially designed plastic speakers are far better than inferior wooden speakers); wooden speakers reduce the sound of the box resonance. Sound quality is generally better than plastic speakers.

Currently, customized horns can be used for police purposes, such as being placed at the top of a police car, used to sound a siren when a police car goes to a police location to notify vehicles and people in front of it. However, the existing police horn lacks an accurate front-vehicle distance detection mechanism and cannot control the playback content according to the preceding vehicle distance.

Summary of the invention

In order to solve the above problems, the present invention provides a basin-shaped electric horn control platform that performs a defog 霾 process on a front image based on a real-time smog concentration to obtain a smog image, and based on the reference vehicle body shape from the smog Performing the latest vehicle body detection in the image to segment and obtain the latest vehicle body sub image from the dehazing image, and also for determining and outputting the depth of field in the dehazing image based on the body object corresponding to the latest vehicle body sub image. The closest vehicle distance, receiving the nearest vehicle distance, and determining the sound intensity of the basin-shaped electric horn based on the nearest vehicle distance, wherein the farther the nearest vehicle distance is, the higher the sound intensity of the basin-shaped electric horn , thus ensuring that the front cars at all distances are clearly Get the rear police car position.

According to an aspect of the present invention, a basin-shaped electric horn control platform is provided, the system comprising a lower iron core, a coil, an upper iron core, a diaphragm, a sounding board, an armature, an outer iron core, a contact, an adjusting screw, a horn button a basin-shaped electric horn composed of a lock nut, the upper iron core being disposed above the outer iron core;

The lower iron core is disposed under the outer iron core, the lower iron core is disposed opposite to the upper iron core, the outer iron core is wrapped with the coil, and the diaphragm is disposed above the upper iron core. The sounding board is disposed above the diaphragm, the armature is disposed between the upper core and the diaphragm, the contact is in contact with the armature, and the outer core is connected to the positive end of the power supply ;

Wherein the horn button is located between the contact and the negative end of the power supply for opening the basin-shaped electric horn in a pressed state, and closing the basin-shaped electric horn in a released state.

More specifically, in the basin-shaped electric horn control platform: a voltage converter connected to the vehicle-mounted power source for converting a voltage of the vehicle-mounted power source into various voltages used by the platform; wherein the voltage converter is set Below the front panel of the vehicle.

More specifically, in the basin-shaped electric horn control platform: the positive end of the voltage converter is used as the positive end of the power supply, and the negative end of the voltage converter is used as the negative end of the power supply.

More specifically, the basin-shaped electric horn control platform further includes: a rectifier connected to the voltage converter for performing a rectifying operation on a signal output by the voltage converter; a voltage regulator, and the A rectifier connection is used to regulate the signal output by the rectifier.

More specifically, in the basin-shaped electric horn control platform: alternatively, the positive terminal of the voltage regulator is used as the positive terminal of the power supply, and the negative terminal of the voltage regulator is used as the negative terminal of the power supply.

More specifically, in the basin-shaped electric horn control platform, the method further includes:

The smog detection device is disposed on the roof of the vehicle for detecting and outputting the smog concentration around the roof of the vehicle; the high-definition camera is disposed on the roof of the vehicle for performing high-definition image data near the vehicle Capture to obtain images near HD;

a brightness detecting device disposed on the roof of the vehicle and in the vicinity of the high-definition camera for detecting and outputting real-time brightness; the smog detecting device is connected to the brightness detecting device for receiving the real-time brightness, and Correcting the smog concentration detected by the smog detecting device based on the real-time brightness, and outputting the corrected smog concentration as a real-time smog concentration;

a contrast enhancement device connected to the high-definition camera for receiving images near high definition, Performing a contrast enhancement process on the image near the high definition to obtain an enhanced image; a mean square error detecting device for receiving the enhanced image, determining a mean square error of the enhanced image pixel value based on the pixel value of each pixel of the enhanced image as the target mean squared output;

The signal-to-noise ratio detecting device is configured to receive the enhanced image, and perform noise analysis on the enhanced image to obtain a main noise signal with the largest noise amplitude and a secondary noise signal with the second largest noise amplitude, based on the main noise signal, the secondary noise signal, and the enhancement. The image determines the signal-to-noise ratio of the enhanced image to be output as the target signal-to-noise ratio, and is also used to perform scene determination on the enhanced image to determine a distribution of pixel values of pixel points in the enhanced image, and each pixel in the enhanced image is based on the distribution. Performing pixel value analysis to determine whether it is a noise point, forming each noise point in the enhanced image into a plurality of noise regions, determining the area and shape of each noise region, and summing the areas of the respective noise regions to obtain the total area of the noise region;

The improved median filtering device is respectively connected with the mean square error detecting device and the signal to noise ratio detecting device, and is used when the target signal to noise ratio is less than or equal to the preset signal to noise ratio threshold and the target mean square difference is greater than or equal to the preset mean square error threshold. The power saving state enters the working state, receives the shape of each noise region, and divides each noise region into a plurality of reference sub-regions based on the geometric features of the shape of each noise region, each of the reference sub-regions having a square shape, Circular or linear, for each noise region, for each of the reference sub-regions after the split, select the corresponding median filter template to perform median filtering respectively to obtain the filter pattern of each sub-region, and filter each sub-region The pattern is combined into a filtered noise region sub-image, and the non-noise region in the enhanced image is combined with each noise region sub-image to obtain a median filtered image;

The Gaussian filtering device is respectively connected with the improved median filtering device, the mean square error detecting device and the signal to noise ratio detecting device, and is used for the target signal to noise ratio being less than or equal to the preset signal to noise ratio threshold and the target mean square difference is greater than or equal to the preset mean square error. When the threshold is reached, the power-saving state is entered into the working state, the median filtered image is received, and the median filtered image is Gaussian filtered to obtain a Gaussian filtered image;

The information extraction device is respectively connected with the smog detection device and the Gaussian filter device, and is configured to receive the Gaussian filtered image, perform defog 滤波 processing on the Gaussian filtered image based on the real-time haze concentration, and obtain a defogging image based on the reference vehicle body shape. Performing the latest vehicle body detection from the dehazing image to divide and obtain the latest vehicle body sub image from the dehazing image, and also for using the defogging image based on the body object corresponding to the latest vehicle body sub image Depth of field determines and outputs the nearest distance;

Wherein the basin-shaped electric horn is connected to the information extraction device for receiving the most recent a vehicle distance, and determining a sound intensity of the basin-shaped electric horn based on the nearest vehicle distance, the farther the nearest vehicle distance is, the higher the sound intensity of the basin-shaped electric horn; and the plurality of noise regions in the enhanced image The area other than the non-noise area; the distribution of the pixel value of the pixel in the enhanced image includes determining the range of pixel values to which the pixel value of the pixel should belong for each pixel in the enhanced image.

More specifically, the basin-shaped electric horn control platform further includes: a vehicle lamp control device disposed in the front panel of the vehicle and connected to the information extraction device for receiving the nearest vehicle distance.

More specifically, in the basin-shaped electric horn control platform: the vehicle lamp control device controls the luminous intensity of the vehicle lamp based on the nearest vehicle distance when receiving the latest vehicle distance; wherein the nearest car The greater the distance, the higher the luminous intensity of the lamp.

DRAWINGS

Embodiments of the present invention will be described below with reference to the accompanying drawings, in which:

1 is a block diagram showing the structure of a basin-shaped electric horn control platform according to an embodiment of the present invention.

Reference numerals: 1 basin-shaped electric horn; 2 manual switch; 3 manual mode adjuster

detailed description

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the basin-shaped electric horn control platform of the present invention will be described in detail below with reference to the accompanying drawings.

The horn is generally composed of a magnetic circuit system (permanent magnet, core column, magnetic conductive plate), a vibration system (paper cone, voice coil), and a supporting auxiliary system (centering piece, basin frame, and rim).

1. Voice coil: The voice coil is the driving unit of the cone-shaped cone speaker. It is wound on the paper tube by two layers of very thin copper wire. Generally, it is wound around several dozen turns, also called coil, placed on the magnetic core. The magnetic interference gap formed by the column and the magnetic conductive plate. The voice coil is fixed with the paper cone. When the sound current signal enters the voice coil, the voice coil vibration drives the paper cone to vibrate.

2. Paper cone: There are many kinds of materials used for the cone diaphragm of the cone cone. There are two types of natural fiber and man-made fiber. Natural fibers are usually made of cotton, wood, wool, silk, etc., and rayon is made of rayon, nylon, glass fiber, and the like. Since the paper cone is the sound radiation of the horn The device determines the sound release performance of the speaker to a considerable extent, so no matter which type of paper cone, it is required to be light and rigid, and cannot be deformed due to changes in ambient temperature and humidity.

3. Folding ring: The folding ring is set to ensure the movement of the paper cone along the axial direction of the horn and to limit the lateral movement. At the same time, it acts to block the front and back of the paper cone. In addition to the material of the paper cone, the material of the folding ring is also bonded to the paper cone by hot pressing using plastic, natural rubber or the like.

4. Centering piece: The centering piece is used to support the joint of the voice coil and the paper cone to ensure that it is vertical without skewing. There are many concentric rings on the centering piece, so that the voice coil can freely move up and down in the magnetic gap without lateral movement, ensuring that the voice coil does not touch the magnetic plate. The dust cover on the centering piece is to prevent the external dust from falling into the magnetic gap, avoiding the friction between the dust and the voice coil, and causing the horn to produce an abnormal sound.

The police horn in the prior art cannot adaptively adjust its pronunciation intensity according to the front distance and the smog concentration in the smog weather. In order to overcome the above deficiencies, the present invention constructs a basin-shaped electric horn control platform for solving the above technical problems.

1 is a block diagram showing the structure of a basin-shaped electric horn control platform including a lower core, a coil, an upper core, a diaphragm, a sounding plate, an armature, an outer core, a contact, an adjusting screw, according to an embodiment of the present invention. a basin-shaped electric horn composed of a horn button and a lock nut, the upper core being disposed above the outer core; the system further comprising a manual switch and a manual mode adjuster. The basin-shaped electric horns are respectively connected to the manual switch and the manual mode regulator.

Next, the specific structure of the basin-shaped electric horn control platform of the present invention will be further described.

In the basin-shaped electric horn control platform: a voltage converter connected to the vehicle power source for converting a voltage of the vehicle power source into various voltages used by the platform; wherein the voltage converter is disposed at a front end of the vehicle Below the dashboard.

In the basin-shaped electric horn control platform: the positive end of the voltage converter is used as a power supply The positive terminal of the source uses the negative terminal of the voltage converter as the negative terminal of the power supply.

The basin-shaped electric horn control platform further includes: a rectifier connected to the voltage converter for rectifying a signal output by the voltage converter; and a voltage regulator connected to the rectifier The voltage output operation is performed on the signal output by the rectifier.

In the basin-shaped electric horn control platform: alternatively, the positive terminal of the voltage regulator is used as the positive terminal of the power supply, and the negative terminal of the voltage regulator is used as the negative terminal of the power supply.

In the basin electric horn control platform, the method further includes:

a contrast enhancement device connected to the high-definition camera for receiving an image near high definition, performing contrast enhancement processing on an image near high definition to obtain an enhanced image; and a mean square difference detecting device for receiving an enhanced image based on each pixel of the enhanced image The pixel value determines a mean square error of the enhanced image pixel value to output as a target mean square error;

The improved median filtering device is respectively connected with the mean square error detecting device and the signal to noise ratio detecting device, and is used when the target signal to noise ratio is less than or equal to the preset signal to noise ratio threshold and the target mean square difference is greater than or equal to the preset mean square error threshold. The power saving state enters the working state, receives the shape of each noise region, and splits each noise region into a plurality of bases based on the geometric features of the shape of each noise region. The quasi-sub-region, each of the reference sub-regions has a square, circular or linear shape, and for each noise region, for each of the sub-regions after being split, the corresponding median filter template is selected to perform median filtering respectively. Obtaining each sub-region filter pattern, and combining each sub-region filter pattern into a filtered noise region sub-image, and combining the non-noise region in the enhanced image with each noise region sub-image to obtain a median filtered image;

Wherein the basin-shaped electric horn is connected to the information extraction device for receiving the nearest vehicle distance, and determining a sound intensity of the basin-shaped electric horn based on the nearest vehicle distance, the farther the nearest vehicle distance is The potentiometric intensity of the pot-shaped electric horn is higher; in the enhanced image, the area outside the plurality of noise areas is a non-noise area; the distribution of the pixel values of the pixels in the enhanced image includes the enhanced image for each pixel point. The area within the area determines the range of pixel values to which the pixel value of the pixel should belong.

The basin-shaped electric horn control platform further includes: a vehicle lamp control device disposed in the front panel of the vehicle and connected to the information extraction device for receiving the nearest vehicle distance.

In the basin-shaped electric horn control platform: when receiving the latest vehicle distance, the vehicle light control device controls the light-emitting intensity of the vehicle light based on the latest vehicle distance; wherein the closest vehicle distance is larger, The higher the luminous intensity of the headlights.

Additionally, the high definition camera includes a CMOS image sensor. The CMOS image sensor is a typical solid-state imaging sensor and has a common historical origin with CCD. CMOS image sensors usually consist of an array of image sensitive cells, row drivers, column drivers, timing control logic, AD converters, data bus output interfaces, control interfaces, etc. These parts are usually integrated on the same silicon. The working process can be generally divided into reset, photoelectric conversion, integration, and readout. Several parts.

Other digital signal processing circuits such as AD converter, automatic exposure amount control, non-uniform compensation, white balance processing, black level control, gamma correction, etc. can be integrated on the CMOS image sensor chip, and even for fast calculation DSP devices with programmable functions are integrated with CMOS devices to form a single-chip digital camera and image processing system.

In 1963, Morrison published a computable sensor, a structure that can measure the position of a spot using the light guide effect, and became the beginning of the development of CMOS image sensors. In 1995, the low-noise CMOS active pixel sensor single-chip digital camera was successful.

The CMOS image sensor has several advantages: 1) random window reading capability. The random window read operation is an aspect of the CMOS image sensor that is functionally superior to the CCD, also known as the region of interest selection. In addition, the high integration of CMOS image sensors makes it easy to open multiple tracking windows simultaneously. 2), anti-radiation ability. In general, the potential radiation resistance of CMOS image sensors is significantly enhanced relative to CCD performance. 3), system complexity and reliability. The use of CMOS image sensors can greatly simplify the system hardware structure. 4) Non-destructive data reading method. 5) Optimized exposure control. It is worth noting that CMOS image sensors also have several disadvantages due to the integration of multiple functional transistors in the pixel structure, mainly noise and fill rate. In view of the relatively superior performance of CMOS image sensors, CMOS image sensors have been widely used in various fields.

By adopting the basin-shaped electric horn control platform of the invention, aiming at the technical problem that the adaptive level of the basin-shaped electric horn is not high in the prior art, a plurality of high-precision images are added on the basis of the hardware of the existing basin-shaped electric horn. The processing equipment and the smog detection device are used to obtain the front distance under the smog, and a mechanism for adaptively adjusting the sound intensity of the basin-shaped electric horn based on the front workshop is established, thereby improving the adaptive level of the basin-shaped electric horn.

It is to be understood that while the invention has been described above in the preferred embodiments, the embodiments are not intended to limit the invention. For those skilled in the art, many possible variations and modifications may be made to the technical solutions of the present invention, or modified to equivalent changes, etc., without departing from the scope of the present invention. Effective embodiment. Therefore, any simple modifications, equivalent changes, and modifications of the above embodiments may be made without departing from the spirit and scope of the invention.

Claims

The utility model relates to a basin-shaped electric horn control platform, which comprises a basin-shaped electric horn composed of a lower iron core, a coil, an upper iron core, a diaphragm, a sounding board, an armature, an outer iron core, a contact, an adjusting screw, a horn button and a lock nut. The iron core is disposed above the outer core, the lower iron core is disposed under the outer iron core, the lower iron core is disposed opposite to the upper iron core, and the outer iron core is wrapped with the coil, a diaphragm disposed above the upper core, the sounding board being disposed above the diaphragm, the armature being disposed between the upper core and the diaphragm, the contact being in contact with the armature The outer core is connected to the positive end of the power supply;

Wherein the horn button is located between the contact and the negative end of the power supply for opening the basin-shaped electric horn in a pressed state, and closing the basin-shaped electric horn in a released state.
The basin-shaped electric horn control platform according to claim 1, further comprising:

a voltage converter connected to the vehicle power source for converting the voltage of the vehicle power source into various voltages used by the platform;

Wherein, the voltage converter is disposed under the front panel of the vehicle.
The basin-shaped electric horn control platform according to claim 2, wherein:

The positive terminal of the voltage converter is used as the positive terminal of the power supply, and the negative terminal of the voltage converter is used as the negative terminal of the power supply.
The basin-shaped electric horn control platform according to claim 3, further comprising:

a rectifier connected to the voltage converter for performing a rectifying operation on a signal output by the voltage converter;

And a voltage regulator connected to the rectifier for performing a voltage stabilization operation on a signal output by the rectifier.
The basin-shaped electric horn control platform according to claim 4, wherein:

Alternatively, the positive terminal of the voltage regulator is used as the positive terminal of the power supply, and the negative terminal of the voltage regulator is used as the negative terminal of the power supply.
The basin-shaped electric horn control platform according to claim 5, further comprising:

The smog detecting device is disposed on the roof of the vehicle for detecting and outputting the smog concentration around the roof of the vehicle;

High-definition camera, set on the roof of the vehicle, used for high-definition image data acquisition near the vehicle to obtain images near HD;

a brightness detecting device is disposed on a roof of the vehicle and in the vicinity of the high-definition camera for detecting and outputting real-time brightness;

The smog detecting device is connected to the brightness detecting device for receiving the real-time brightness, and correcting the smog concentration detected by the smog detecting device based on the real-time brightness, and using the corrected smog concentration as Real-time smog concentration output;

a contrast enhancement device connected to the high-definition camera for receiving an image near high definition, and performing contrast enhancement processing on the image near the high definition to obtain an enhanced image;

a mean square error detecting device, configured to receive an enhanced image, and determine a mean square error of the enhanced image pixel value based on pixel values of respective pixels of the enhanced image as a target mean squared output;

The signal-to-noise ratio detecting device is configured to receive the enhanced image, and perform noise analysis on the enhanced image to obtain a main noise signal with the largest noise amplitude and a secondary noise signal with the second largest noise amplitude, based on the main noise signal, the secondary noise signal, and the enhancement. The image determines the signal-to-noise ratio of the enhanced image to be output as the target signal-to-noise ratio, and is also used to perform scene determination on the enhanced image to determine a distribution of pixel values of pixel points in the enhanced image, and each pixel in the enhanced image is based on the distribution. Performing pixel value analysis to determine whether it is a noise point, forming each noise point in the enhanced image into a plurality of noise regions, determining the area and shape of each noise region, and summing the areas of the respective noise regions to obtain the total area of the noise region;

The improved median filtering device is respectively connected with the mean square error detecting device and the signal to noise ratio detecting device, and is used when the target signal to noise ratio is less than or equal to the preset signal to noise ratio threshold and the target mean square difference is greater than or equal to the preset mean square error threshold. The power saving state enters the working state, receives the shape of each noise region, and divides each noise region into a plurality of reference sub-regions based on the geometric features of the shape of each noise region, each of the reference sub-regions having a square shape, Circular or linear, for each noise region, for each of the reference sub-regions after the split, select the corresponding median filter template to perform median filtering respectively to obtain the filter pattern of each sub-region, and filter each sub-region Pattern group Synthesizing the filtered noise region sub-image, and combining the non-noise region in the enhanced image with each noise region sub-image to obtain a median filtered image;

The Gaussian filtering device is respectively connected with the improved median filtering device, the mean square error detecting device and the signal to noise ratio detecting device, and is used for the target signal to noise ratio being less than or equal to the preset signal to noise ratio threshold and the target mean square difference is greater than or equal to the preset mean square error. When the threshold is reached, the power-saving state is entered into the working state, the median filtered image is received, and the median filtered image is Gaussian filtered to obtain a Gaussian filtered image;

The information extraction device is respectively connected with the smog detection device and the Gaussian filter device, and is configured to receive the Gaussian filtered image, perform defog 滤波 processing on the Gaussian filtered image based on the real-time haze concentration, and obtain a defogging image based on the reference vehicle body shape. Performing the latest vehicle body detection from the dehazing image to divide and obtain the latest vehicle body sub image from the dehazing image, and also for using the defogging image based on the body object corresponding to the latest vehicle body sub image Depth of field determines and outputs the nearest distance;

Wherein the basin-shaped electric horn is connected to the information extraction device for receiving the closest vehicle distance, and determining a sound intensity of the basin-shaped electric horn based on the nearest vehicle distance, wherein the nearest vehicle distance The farther away, the higher the sound intensity of the basin-shaped electric horn;

Wherein, in the enhanced image, the area other than the plurality of noise areas is a non-noise area;

Wherein, the distribution of the pixel values of the pixel points in the enhanced image includes determining, for each pixel point, a range of pixel values to which the pixel value of the pixel point belongs in the region where the pixel is located in the enhanced image.
The basin-shaped electric horn control platform according to claim 6, further comprising:

The vehicle light control device is disposed in the front panel of the vehicle and is connected to the information extraction device for receiving the nearest vehicle distance.
The basin-shaped electric horn control platform according to claim 7, wherein:

The vehicle lamp control device controls the luminous intensity of the vehicle lamp based on the nearest vehicle distance when receiving the latest vehicle distance;

Wherein, the greater the recent distance, the higher the luminous intensity of the lamp.